Elastic member



April-16., 1929. E, 5PE|DEL 1,709,198

- A ELAsTIC MEMBER Original Filed March 50. 1927 /7 INVENTOR.

/7 ATTORNEYS. if i y Patented Apr. 16, 1929.

UNITED STATES i PATENT OFFICE.

EUGEN SPEIDEL, OF PFORZHEIMGERMANY,

AssIGNoR'To' FR. SPEIDEL, oF PROVI- DENCE, RHODE ISLAND, A FIRMYCOMPRISING THE FOLLOWING MEMBERS, FRED- EBICK SPEIDEL AND EUGEN SPEIDEL.

EL'AsTIo MEMBER.

Continuation of application `Serial No.179,585, filed Marchl 1927,Patent No. 1,647,060, dated October 25, 1927. This applicationled .Tune30, 1927.

This invention relates to an improvedv con-v struction of an elasticmember more particularly adapted for use as an eXtendible bracelet,garter, neck band or the like and is a.con-

tinuation of my co-,pending application, Serial No. 17 9,585, jtiledMarch 30, 1927, patented October 25, 1927, No. 1,647,060 and the objectof this invention is to Aconstruct such an elastic member of coils ofwire having their convolutions intermeshing one Y with the other alongtheir length and to position a vcore ormiddle member in the coils tore-` tain them in interengaging relation.

these helical coils of a right and lett hand pitch and causethe 4coilsor convolutions to intermesh one with the other whereby the coils serveto support each other and to provide a flexible core of suitablematerialand the coils so that each construction vin the coils to prevent themfrom lateral displacement. Y

A further object of the invention 1s to eX- tend a core through the.coils to Vmaintain them in intermeshed relation and limit theextensionof the elastic coil member.

The invention further consists in tipping will lie in a p lane .at anangle'to their axes wherebythe coils overly each other in the manner offish scales.

Further, it is found of advantageto form the Veoreor locking member ofchain,.the

links of which-,engage the opposite inner edges of the adjacentintermeshing coils to lock them in alignment and also tolimit theextension or stretch of the device.

With these and other objects in view, the

invention consistsoil certain novel vfeatures offconstruction, aswillbe'more fully described, and particularly pointed outin the appendedclaims. Y

In the accompanying drawings:

Figure 1 is a side elevation illustrating my improved elastic member inbracelet form with its ends'attached to opposite sides of a wrist watch.

Figure 2 isa short length of a left hand helical coil.

being made by Serial No. 202,701.

Figure 3 is a corresponding length of a right hand helical coil.

Figure 4 shows these right and left hand helical coils asintermeshing'one with thev mg'these coils as beingset-so that each willA further object of the invention is to formv lie in a plane at an angleto their axes to overly each other 1n the manner of ish scales.

Figure 7 is an end view of the intermeshing coils with a chain Vas acore extending through and engaging tbe opposite inner edges of theadjacent coils to maintain them in intermeshing relation.

Fig. 8 is a detail view ner in which the clasps.

f It is found of advantage in the construction of elastic members ofthis character more particularly for usein the construction ofextendiblev bracelets, garters, neck bands or the like, of advantage toform such a band showing the mancoils'are attached to the i or memberthat will be readily extendible and with sulcient extension when used asa bracelet to readily pass over the hand of the wearer and at the sametime form a braceletwhich is handsome and attractive in appearance andalso one that isextremely simple and inexpensive in construction, thesame simply winding' helical coils of wire preferably ofthe right andleft hand coils and intermeshing these coils one with the other alongtheir length, these coils being locked together against lateraldisengagement by positioning a suitable core in the coils which willengage the opposite inner I edges of the adjacent coils to lock themagainst such lateral displacement; also to provide the core of such aconstruction that it will limit the eXtendibility of the bracelet sothat the helical coils cannot be strained and disrupted suiciently toprevent them from returning `when released to their closely coiledformation and so prevent injury thereto; and the following is a detaileddescription of one means by which these advantageous results may beaccomplished Vllith referenceto the drawings, 10 designates a shortlength of the left hand helical Wire coil which may be made of anydesired length and preferably made of a resilient Wire of the desiredgage and Wound into coils of the desired diameter and 11 designates theright hand coil which is preferably made of similarly sized Wire butwhich may be of a Wire of another color or character if desired. y i

In assembling these two coilsV to Vform an elastic member, I place themside by side and bytensioning the coils slightly to separate them theconvolutions of one are slippedbetween those ofthe other and the twocoilsare In this Way the con-y so yconnected together. volutions of theopposite coil members serve to assistin lsupporting` eachother,

In order to maintain these coils in inter- `meshing Vrelation I extendthe core 12 through the center of these intermeshing coils which may beof any suitable material to loch the coils against relative lateraldis-v placement. This core is preferablyflexible so as to permit freebending action of the.

coils and is preferably connected to the opposite ends of the coils insuch a Way as to permit but yet limit the extension of the elasticmember and so prevent the coils from becoming ruptured or opened upsufficiently to prevent them from returning to closed position Whenreleased. To accomplish this in a simple and'eft'ective way I preferablyemploy a. met-al chain, the links of Which are preferably rolled flat asbest illustrated in Figure 7 wherein the edge 13 of arlink engages theinner edge 14C of a convolution of the left hand helix 15 and theopposite edge I6 of thelink engages the opposite inner edge 17 of theconvolution 18 whereby these coils are y permitted free endiviseextension but prevented from relative lateral disengaging movementthereby retaining them in the desired alignment one with the other; alsothischain by attaching it to the opposite ends of thecoils. or to othermembers adjacent the opposite'ends of the combination coil the extensionof the coil is limited and the device is protected-against beingruptured by undue extension.

It is also found of particular advantage in orderl to enhance theappearance of the combination coil as a bracelet or ornamental member topass the coil through a set of rolls or dies and so tip them over at anangle as best illustrated in Figures 5 and 6 and in some cases topresent the appearance of be; ing flattened or ornamented on their topand bottom surfaces and also presenting afsofter .feel to the arm of thewearer. It may also be noted that in some instances a cap or closureelement 19 may serve as a hook or attaching device to receive theopposite ends of the bracelet coils and also this cap inember in someinstances may provide ananchor 'for the ends of the chain 12 bypassing arvsolelytovvards the construction illustrated,

but I desire it to be understood that I reserve the privilege ofresorting to all the mechanical changes to Which the device issusceptible, the invention being defined` and limited'only by the termsof the appended claims.

I claim: Y

Y 1. elastic member comprising two lengths of helical coils of Wireintermeshing onewvithl the otherv along their length With the axis ofone coil parallel to and spaced from the axis of Vthe other coil, and aflexible core in ysaid coils maintaining them in intermeshing relation.Y v Y r 2.An elastic member comprising lengths of right and left handhelical coils of Wire intermeshing along their length and a' flexiblecore insaid coilsrmaintaining Vthem in intermeshing relation.v Y

3. An elastic member comprising lengths ofright and left handintermeshing helical coils of Wire and a iiexible core in said coilsmaintaining them in intermeshing relation, saidcore also being'arrangedtolimit the end- Wise extension of said coil members.

, 4. An elastic member comprising lengths of right and left hand helicalcoils of Wire having their convolutions intermeshing vvithl Veach otheralongf'theirlength, and a core extending 1 through said coils'maintaining them in intermeshing relation. Y

5. An elastic member comprising lengths of right and left hand helicalcoils of Wire having their convolutions intermeshing with each other'along their length and -ay core ex tending through said coilsmaintaining them in intermeshing relation, said core being alsorarranged to limit the extension of said coil members. Y

6. An elastic band comprising lengths of right'and left hand helicalcoils of Wire, the convolutions of said coils interengaging one with theother along their length, a member extending through said coilsmaintaining them in interengaging relation and arranged to limit theirextension and vconnecting means on the ends of said band.

7 Ank elastic member comprising lengths of right and left hand helicalcoils int-ermeshing one with the .other along their length theconvolutions of said coils being set on an incline to overly each other,and

means for maintaining said coils in intermeshingrelation.

8. An elastic band comprising lengths of right and lefthand helicalcoilsrarranged with Jtheir convolutions intermeshing with each otheralong their length, said convolutions being inclined relative to theiraxes to overlie each other and a chain extending through theconvolutions the links of which engage the opposite sides of thealternate 10 convolutions to retain them in operative alignment, saidchain also serving to limit the extension of the band.

In testimony whereof I aii'ix my signature.

EUGEN SPEIDEL.

